CVE-2026-104715
Publication date 16 October 2026
Last updated 28 October 2026
Ubuntu priority
Description
A flaw was found in cifs-utils. This flaw allows an unprivileged local user to achieve privilege escalation. When a privileged service mounts a Common Internet File System (CIFS) share using a user-controlled credentials file, input values are not properly sanitized before being assembled into mount options. A local attacker can exploit this vulnerability to inject unauthorized mount options, allowing them to bypass permission checks and execute files with administrative (root) privileges.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| cifs-utils | 26.10 stonking |
Fixed in 2:7.4-1ubuntu3.1
|
| 26.04 LTS resolute |
Fixed in 2:7.4-1ubuntu0.26.04.4
|
|
| 24.04 LTS noble |
Fixed in 2:7.0-2ubuntu0.6
|
|
| 22.04 LTS jammy |
Fixed in 2:6.14-1ubuntu0.7
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Patch details
| Package | Patch details |
|---|---|
| cifs-utils |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.8 · High
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8938-1
- cifs-utils vulnerability
- 19 October 2026